CN206000973U - Oil-leakage-prevention venting plug structure - Google Patents
Oil-leakage-prevention venting plug structure Download PDFInfo
- Publication number
- CN206000973U CN206000973U CN201620852356.2U CN201620852356U CN206000973U CN 206000973 U CN206000973 U CN 206000973U CN 201620852356 U CN201620852356 U CN 201620852356U CN 206000973 U CN206000973 U CN 206000973U
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- China
- Prior art keywords
- shoulder hole
- cushion block
- oil
- leakage
- macropore
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Abstract
This utility model is related to a kind of oil-leakage-prevention venting plug structure, including the thread plug with shoulder hole, the big nose end of described thread plug shoulder hole is provided with end cap, the macropore basal sliding of described shoulder hole is provided with the cushion block connect between the macropore of closure shoulder hole and aperture, it is provided with back-moving spring between described cushion block and end cap, so that cushion block presses to the small bore end of shoulder hole, the side wall of described shoulder hole macropore offers passage.This utility model oil-leakage-prevention air relief cock reasonable in design, the manufacturing are simple, and each Workpiece Machining Accuracy is less demanding, low production cost, are conducive to avoiding producing oil leakage phenomenon.
Description
Technical field
This utility model is related to a kind of oil-leakage-prevention venting plug structure.
Background technology
Air relief cock all can be provided with the casings such as gear-box, change speed gear box, venting during certain value is reached with pressure in casing,
Pressure will not be too high in guard box body, and then the venting plug structure of those casings is more complicated at present, processing technique Manufacturing cost
Higher, in addition also can the oil leak when pressure is without departing from definite value, thus to using making troubles.
Content of the invention
The purpose of this utility model is to provide a kind of oil-leakage-prevention venting plug structure, this oil-leakage-prevention air relief cock structure design
Rationally, advantageously reduce cost and prevent oil leak.
This utility model oil-leakage-prevention venting plug structure it is characterised in that：Including the thread plug with shoulder hole, described screw thread
The big nose end of plug shoulder hole is provided with end cap, the macropore basal sliding of described shoulder hole be provided with closure shoulder hole macropore and aperture it
Between connection cushion block, be provided with back-moving spring between described cushion block and end cap, so that cushion block presses to the small bore end of shoulder hole, described rank
The side wall of terraced hole macropore offers passage.
Further, above-mentioned end cap is in hood-like, and it is with thread plug termination tight fit.
Further, above-mentioned cushion block is solid circular cushion block, and it is made up of fluorubber.
Further, above-mentioned cushion block is fixed with pilot pin towards on the end face of back-moving spring side, described pilot pin by
Tetrafluoroethene is made.
Further, above-mentioned cushion block is towards side and the macropore base plane close fit of shoulder hole aperture.
The operation principle of this utility model oil-leakage-prevention venting plug structure：During installation, will have external screw thread side thread plug with
Casing connects, and is the external screw thread of thread plug outside the small bore end of shoulder hole, when being in normal pressure in casing or less than fixed after installation
During duty pressure, due to the thrust of back-moving spring, make cushion block compressing tightly in macropore bottom, so that the oil in casing cannot be spilt；
And the pressure worked as in casing is more than value of pressure（The i.e. pressure of back-moving spring）When, the high pressure gas in casing promote cushion block to move
Dynamic, the high pressure gas mixing organic oil are discharged by the aperture of shoulder hole, macropore and passage, ensure that the use of casing
Safety.
This utility model oil-leakage-prevention air relief cock reasonable in design, the manufacturing are simple, and each Workpiece Machining Accuracy requires not
High, low production cost, is conducive to avoiding producing oil leakage phenomenon.
Brief description
Fig. 1 is profile construction schematic diagram of the present utility model；
Fig. 2 is front view of the present utility model；
Fig. 3 is left view of the present utility model.
Specific embodiment
The utility model is described in more detail with reference to the accompanying drawings and detailed description.
This utility model oil-leakage-prevention venting plug structure, including the thread plug 2 with shoulder hole 1, described thread plug 2 shoulder hole
Macropore 101 end be provided with end cap 3, the macropore basal sliding of described shoulder hole be provided with closure shoulder hole macropore and aperture 102 it
Between connection cushion block 4, be provided with back-moving spring 5 between described cushion block 4 and end cap 3, so that cushion block presses to the small bore end of shoulder hole, institute
The side wall stating shoulder hole macropore offers passage 6.
Further, in order to reasonable in design, above-mentioned end cap is in hood-like, itself and thread plug termination tight fit；Above-mentioned cushion block is
Solid circular cushion block, it is made up of fluorubber.
Further, in order to be conducive to the slide-and-guide of cushion block 4, above-mentioned cushion block is solid towards on the end face of back-moving spring side
Surely it is provided with pilot pin 7, described pilot pin is made up of tetrafluoroethene.Pilot pin 7 is in ladder shaft-like.
Further, in order that good airproof performance, above-mentioned cushion block is close with macropore base plane towards the side of shoulder hole aperture
Close cooperation.
Dig annular ditch 8 in the macropore bottom surface week portion of shoulder hole, cushion block 4 has been reduced by this annular ditch 8 big with shoulder hole
The contact area in bottom hole face, makes cushion block 4 be easier to seal, also reduces the difficulty of processing of shoulder hole macropore bottom surface.In shoulder hole
Aperture is provided with chamfering towards the end of macropore, and this chamfering is also advantageous that in the contact surface reducing cushion block 4 and shoulder hole macropore bottom surface
Long-pending, make cushion block 4 be easier to seal.
In order to reasonable in design, realize preferable seal, shoulder hole macropore 101 with the diameter ratio of shoulder hole aperture 102 is
5:3, the diameter of shoulder hole macropore 101 and passage 6 is than for 2:1, this design can achieve more preferable oil-leakage-prevention.
The operation principle of this utility model oil-leakage-prevention venting plug structure：During installation, will have external screw thread side thread plug with
Casing connects, and is the external screw thread of thread plug outside the small bore end of shoulder hole, when being in normal pressure in casing or less than fixed after installation
During duty pressure, due to the thrust of back-moving spring, make cushion block compressing tightly in macropore bottom, so that the oil in casing cannot be spilt；
And the pressure worked as in casing is more than value of pressure（The i.e. pressure of back-moving spring）When, the high pressure gas in casing promote cushion block to move
Dynamic, the high pressure gas mixing organic oil are discharged by the aperture of shoulder hole, macropore and passage, ensure that the use of casing
Safety.
This utility model oil-leakage-prevention air relief cock reasonable in design, the manufacturing are simple, and each Workpiece Machining Accuracy requires not
High, low production cost, is conducive to avoiding producing oil leakage phenomenon.
The foregoing is only preferred embodiment of the present utility model, all according to this utility model claim done equal
Deng change and modification, covering scope of the present utility model all should be belonged to.
Claims (5)
1. a kind of oil-leakage-prevention venting plug structure it is characterised in that：Including the thread plug with shoulder hole, described thread plug shoulder hole
Big nose end be provided with end cap, the macropore basal sliding of described shoulder hole is provided with and connects between the macropore of closure shoulder hole and aperture
Cushion block, is provided with back-moving spring between described cushion block and end cap, so that cushion block presses to the small bore end of shoulder hole, described shoulder hole macropore
Side wall offer passage.
2. oil-leakage-prevention according to claim 1 venting plug structure it is characterised in that：Described end cap is in hood-like, itself and screw thread
Plug termination tight fit.
3. oil-leakage-prevention according to claim 1 venting plug structure it is characterised in that：Described cushion block is solid circular pad
Block, it is made up of fluorubber.
4. oil-leakage-prevention according to claim 1 venting plug structure it is characterised in that：Described cushion block is towards back-moving spring side
End face on be fixed with pilot pin, described pilot pin is made up of tetrafluoroethene.
5. oil-leakage-prevention according to claim 1 venting plug structure it is characterised in that：Described cushion block is towards shoulder hole aperture
Side and macropore base plane close fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620852356.2U CN206000973U (en) | 2016-08-09 | 2016-08-09 | Oil-leakage-prevention venting plug structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620852356.2U CN206000973U (en) | 2016-08-09 | 2016-08-09 | Oil-leakage-prevention venting plug structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206000973U true CN206000973U (en) | 2017-03-08 |
Family
ID=58199791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620852356.2U Active CN206000973U (en) | 2016-08-09 | 2016-08-09 | Oil-leakage-prevention venting plug structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206000973U (en) |
-
2016
- 2016-08-09 CN CN201620852356.2U patent/CN206000973U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |